Avoid explicit bitwise operators

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 438c2d6fe858d85e1c72f1ed37c0ec73b74f48ce..daed19135359406ddfde08e3c5f825b5e918803c 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -145,7 +145,7 @@ void Search::init() {
 
   // Init futility move count array
   for (d = 0; d < 32; d++)
-      FutilityMoveCounts[d] = int(3.001 + 0.25 * pow(double(d), 2.0));
+      FutilityMoveCounts[d] = int(3.001 + 0.3 * pow(double(d), 1.8));
 }
 
 
@@ -264,6 +264,10 @@ void Search::think() {
 
 finalize:
 
+  // When search is stopped this info is not printed
+  sync_cout << "info nodes " << RootPos.nodes_searched()
+            << " time " << Time::now() - SearchTime + 1 << sync_endl;
+
   // When we reach max depth we arrive here even without Signals.stop is raised,
   // but if we are pondering or in infinite search, according to UCI protocol,
   // we shouldn't print the best move before the GUI sends a "stop" or "ponderhit"
@@ -523,6 +527,7 @@ namespace {
     bestValue = -VALUE_INFINITE;
     ss->currentMove = threatMove = (ss+1)->excludedMove = bestMove = MOVE_NONE;
     ss->ply = (ss-1)->ply + 1;
+    ss->futilityMoveCount = 0;
     (ss+1)->skipNullMove = false; (ss+1)->reduction = DEPTH_ZERO;
     (ss+2)->killers[0] = (ss+2)->killers[1] = MOVE_NONE;
 
@@ -592,7 +597,7 @@ namespace {
         // Never assume anything on values stored in TT
         if (  (ss->staticEval = eval = tte->eval_value()) == VALUE_NONE
             ||(ss->evalMargin = tte->eval_margin()) == VALUE_NONE)
-            eval = ss->staticEval = evaluate(pos, ss->evalMargin, &ss->ei);
+            eval = ss->staticEval = evaluate(pos, ss->evalMargin);
 
         // Can ttValue be used as a better position evaluation?
         if (ttValue != VALUE_NONE)
@@ -602,7 +607,7 @@ namespace {
     }
     else
     {
-        eval = ss->staticEval = evaluate(pos, ss->evalMargin, &ss->ei);
+        eval = ss->staticEval = evaluate(pos, ss->evalMargin);
         TT.store(posKey, VALUE_NONE, BOUND_NONE, DEPTH_NONE, MOVE_NONE,
                  ss->staticEval, ss->evalMargin);
     }
@@ -645,6 +650,7 @@ namespace {
         && !inCheck
         &&  eval - futility_margin(depth, (ss-1)->futilityMoveCount) >= beta
         &&  abs(beta) < VALUE_MATE_IN_MAX_PLY
+        &&  abs(eval) < VALUE_KNOWN_WIN
         &&  pos.non_pawn_material(pos.side_to_move()))
         return eval - futility_margin(depth, (ss-1)->futilityMoveCount);
 
@@ -806,7 +812,6 @@ split_point_start: // At split points actual search starts from here
                         << " currmovenumber " << moveCount + PVIdx << sync_endl;
       }
 
-      ss->futilityMoveCount = 0;
       ext = DEPTH_ZERO;
       captureOrPromotion = pos.is_capture_or_promotion(move);
       givesCheck = pos.move_gives_check(move, ci);
@@ -906,6 +911,8 @@ split_point_start: // At split points actual search starts from here
           // far in the move list we are to be more aggressive in the child node.
           ss->futilityMoveCount = moveCount;
       }
+      else
+          ss->futilityMoveCount = 0;
 
       // Check for legality only before to do the move
       if (!RootNode && !SpNode && !pos.pl_move_is_legal(move, ci.pinned))
@@ -1175,10 +1182,10 @@ split_point_start: // At split points actual search starts from here
             // Never assume anything on values stored in TT
             if (  (ss->staticEval = bestValue = tte->eval_value()) == VALUE_NONE
                 ||(ss->evalMargin = tte->eval_margin()) == VALUE_NONE)
-                ss->staticEval = bestValue = evaluate(pos, ss->evalMargin, &ss->ei);
+                ss->staticEval = bestValue = evaluate(pos, ss->evalMargin);
         }
         else
-            ss->staticEval = bestValue = evaluate(pos, ss->evalMargin, &ss->ei);
+            ss->staticEval = bestValue = evaluate(pos, ss->evalMargin);
 
         // Stand pat. Return immediately if static value is at least beta
         if (bestValue >= beta)